Structure and Properties of Alloys Obtained by Aluminothermic Reduction of Deep-Sea Nodules
| Autor: | Alisa Tsepeleva, Jaromír Kopeček, Alena Michalcová, František Laufek, Nguyen Hong Vu, Lucie Šulcová, Petr Dvořák, Pavel Novák |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Alloy 0211 other engineering and technologies chemistry.chemical_element aluminothermy 02 engineering and technology Manganese engineering.material 010502 geochemistry & geophysics 01 natural sciences lcsh:Technology Article Thermal conductivity Aluminium Thermal deep-sea nodules General Materials Science lcsh:Microscopy 021102 mining & metallurgy 0105 earth and related environmental sciences lcsh:QC120-168.85 lcsh:QH201-278.5 lcsh:T Metallurgy Extraction (chemistry) technology industry and agriculture equipment and supplies Cracking chemistry lcsh:TA1-2040 Tool steel engineering lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:Engineering (General). Civil engineering (General) manganese alloy lcsh:TK1-9971 |
| Zdroj: | Materials Volume 14 Issue 3 Materials, Vol 14, Iss 561, p 561 (2021) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma14030561 |
| Popis: | This paper brings an innovative processing route of manganese deep-sea nodules, which results in completely new grades of alloys. Deep-sea nodules were processed by aluminothermic method without the extraction of individual elements, producing complexly alloyed manganese-based &ldquo natural alloys&rdquo Three levels of the amount of aluminum were used for the aluminothermic reduction, and hence the alloys differ strongly in the amount of aluminum, which has a significant effect on their phase composition. The alloys have very high wear resistance, comparable with tool steel. The disadvantage of low-aluminum alloy is the susceptibility to local thermal cracking during friction, which occurs especially in the case of a dry sliding wear against the static partner with low thermal conductivity. |
| Databáze: | OpenAIRE |
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